Wondering how the loop will close

In most novels the plot is dropped into the reader's hands like grains of sand out of an hourglass of unfathomable size. By their 2/3-3/4 mark, their readers have most of the sand in their hands and don't need to be told how much was in the hourglass to begin with.

Infinite Jest practically dumps a beach's worth of sand on its readers before the plot is revealed. But, Wallace has filled the book's first 700 pages with so many characters and scenes that the revelation of the Wheelchair Assassins' motive really isn't as disappointing as it otherwise might have been. Not to mention that from the first scene at Antitoi Entertainment it's been plain that those Assassins were after the master tape of "the Entertainment."

Still, knowing that the book's first chapter is also it's last has me wondering just how things will come full circle.